That thing is not the charger, the actual charger is inside the car. That is just an interface box taking care of communicating to the car that it is hooked up to a household outlet. Connecting the car to a proper charger is done with just a cable.
Also the European type 2 plug (unlike the American type 1)will physically lock the cable to the car and (when not using household outlet like that) also at the charging station / wallbox, so there is no real risk of the cable being stolen or the charging being interrupted. The household outlet cables like the one used in the picture are always called "emergency cables", and for good reason: they can be stolen, charging can be interrupted, charging is dreadfully slow, etc... So that dude is just an idiot
Also the European type 2 plug (unlike the American type 1)will physically lock the cable to the car and (when not using household outlet like that) also at the charging station / wallbox, so there is no real risk of the cable being stolen or the charging being interrupted. The household outlet cables like the one used in the picture are always called "emergency cables", and for good reason: they can be stolen, charging can be interrupted, charging is dreadfully slow, etc... So that dude is just an idiot